This pull request fixes the following 'pip install' issue:
ERROR: Complete output from command python setup.py egg_info:
ERROR: Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/tmp/pip-req-build-b1gvwxaf/setup.py", line 4, in <module>
from pip.req import parse_requirements
ModuleNotFoundError: No module named 'pip.req'
----------------------------------------
ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-req-build-b1gvwxaf/
This pull request fixes the following 'pip install' issue: